CHEMICAL REACTION ENGINEERING QUIZ

For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption.

Chemical

Neither A nor B

Physical

Both A and B

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the dispersion number for a CSTR?

0

1

< 1

∞

TRUE ANSWER : ?
YOUR ANSWER : ?

The reason why a catalyst increases the rate of reaction is that, it

Decreases the energy barrier for reaction

Increases the activation energy

Decreases the molecular collision diameter

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

For a __________ order reaction, the units of rate constant and rate of reaction are the same.

Fractional

Second

Zero

First

TRUE ANSWER : ?
YOUR ANSWER : ?

In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole.

100

10000

1000

100000

TRUE ANSWER : ?
YOUR ANSWER : ?

For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a __________ reactor.

Tubular flow

Batch

Stirred tank

Fixed bed

TRUE ANSWER : ?
YOUR ANSWER : ?

The reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.

Photochemical

Autocatalytic

Catalytic

Biochemical

TRUE ANSWER : ?
YOUR ANSWER : ?

Kinetics of a catalytic reaction can be best studied on a/an __________ reactor.

Integral (plug flow)

Mixed

Differential (flow)

Either A, B and C

TRUE ANSWER : ?
YOUR ANSWER : ?

The residence time distribution of an ideal CSTR is

Exp(-t/τ)

1/τ (-t/τ)

Τ exp (-t/τ)

1/τ exp (-t/τ)

TRUE ANSWER : ?
YOUR ANSWER : ?

A catalyst loses its activity due to

Covering of the catalytic active sites by a foregin substance

Agglomeration of metal particles caused by thermal sintering of the solid surface

Loss in surface area of the active component

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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